Question and answer
explain effects of soil physical properties on crop production
Crops have been grown in the subhumid and semiarid Argentinean Pampas for over 50 years using tillage methods (intensive plowing) introduced from more humid regions. [ As a result, soil degradation due to erosion by wind and water has been moderate to severe. Experiments to control erosion through use of conservation systems were initiated at six semiarid and subhumid sites in the Argentinean
Pampas between 1976 and 1990 and conducted for 5 to 11 years. In this paper, we summarize the effect of conventional and conservation tillage treatments on some soil properties and crop yields. Most soil physical, chemical, and biological properties were improved by conservation systems, but the rate of change differed due to climatic and soil differences among sites, with the difference due to tillage generally being greater at the more humid sites with loamy soils than at the drier sites with sandier soils. Crops with a large N requirement yielded less with conservation than with conventional tillage systems. Use of conservation tillage can improve or stabilize soil conditions in the region, but crop nutrient requirements must be met to achieve optimum crop yields when conservation tillage is used. Research regarding the plant nutrient requirements under conservation tillage is being conducted. Also, conservation tillage is gaining acceptance in the Argentinean Pampas region. ]
Expert answered|ANGEEELICA|Points 2208|
Question
Asked 3/18/2011 5:14:41 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
18,057,566 questions answered
Popular Conversations
How would you rewrite the equation 2x + 4y + 2 = 3y + 5 in general ...
Weegy: FOIL (First Outside Inside Last) = 2x(2x) + 2x(-3y) + (-3y)(2x) + (-3y)(-3y) = 4x^2 + (-6xy) + (-6xy) + ...
10/30/2014 6:28:25 PM| 4 Answers
Solve the following equation. x + 6 = x + x 2 6 14 72 User: ...
Weegy: I'm sorry, do you have a question I can help you with today? User: Solve for A. BA + C = D A = D - B - C A ...
10/30/2014 9:06:00 AM| 3 Answers
What is the slope of the line that has the equation 4x + 2y = 12?
Weegy: The slope of the line that has the equation 4x + 2y = 12 is -2. User: What is the y-intercept of the line ...
10/30/2014 6:21:18 PM| 3 Answers
Prior to the Seventeenth Amendment, who chose the members of the US ...
Weegy: Prior to the Seventeenth Amendment, State legislatures chose the members of the US Senate. User: Prior to ...
10/30/2014 7:05:25 AM| 2 Answers
In a plane, if two lines are perpendicular to the same line, then ...
Weegy: Two lines parallel to the same plane are parallel to each other. TRUE. User: Congruent triangles are any two ...
10/30/2014 8:12:29 AM| 2 Answers
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 3275 [Total 15650]| Ratings 0| Comments 3275| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 2097 [Total 11578]| Ratings 5| Comments 2047| Invitations 0|Online
S
1
L
1
L
P
P
L
Points 1114 [Total 13343]| Ratings 1| Comments 1104| Invitations 0|Offline
S
L
Points 886 [Total 2285]| Ratings 0| Comments 886| Invitations 0|Offline
S
Points 673 [Total 674]| Ratings 7| Comments 603| Invitations 0|Offline
S
1
L
L
Points 567 [Total 6361]| Ratings 3| Comments 537| Invitations 0|Online
S
Points 482 [Total 482]| Ratings 0| Comments 452| Invitations 3|Offline
S
Points 464 [Total 464]| Ratings 1| Comments 454| Invitations 0|Offline
S
L
Points 79 [Total 1296]| Ratings 1| Comments 69| Invitations 0|Offline
S
1
Points 65 [Total 683]| Ratings 0| Comments 65| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.